ANALYSIS OF NEURAL NETWORK ARCHITECTURES FOR RECOGNITION OF HANDWRITTEN NUMBERS

The accuracy of contemporary systems designed for the recognition of handwritten numbers exhibits significant variability, contingent upon the technologies selected during the development of a specific method. Neural networks have supplanted algorithms reliant on statistical data and datasets for this task, primarily due to their better performance. Several recent publications addressing the challenges of handwritten digit recognition employing diverse types of neural networks have been examined. This paper delves into the analysis of the architecture of two prominent types: dense neural networks and convolutional neural networks along with their respective training methods applicable to the recognition of handwritten digits from images. The study's findings reveal that Dense Neural Networks (DNN), while applicable to the task at hand, demonstrate diminished performance as the size of the input image increases. Conversely, Convolutional Neural Networks (CNN) prove more adept at image analysis, owing to their convolution and pooling operations, thus establishing their priority in this context. Four distinct types of learning applicable to neural networks were explored, namely Supervised Learning, Unsupervised Learning, Semi-supervised Learning, and Reinforcement Learning. The investigation concludes that Supervised Learning using backpropagation emerges as the most fitting method for training neural networks to address the identified problem. The paper further explores the stages and principles underpinning the operation of the backpropagation method. Building upon the derived results, there is a plan to develop an application leveraging the identified architecture. This application aims to empower users with the capability to efficiently extract digital information from images, irrespective of their resolution. The envisioned outcome is an application that attains high accuracy and processing speed in image recognition and extraction.